Type-writing machine.



No.872,543. ,PATENTED'DEO.3,1907.

H. A.'SMEDBERG.'

TYPE WRITING MACHINE.

APPLIQATION FILED $133.8, 1906.

. \A/ITNESEEE: INV NTDR;

1-115 TTURNEY- PATENTED DEC. 3, 1907.

E. A. SMEDBERG. TYPE WRITING MACHINE.

.AP'PLIOATION FILED FEB. 6, 1906.

2 SHEETS-SHEET 2.

HIE TTEIRNEY i UNITED sTATEs PATENT OFFICE.

HENRY A. SMEDBERG, OF NEW YORK, N. Y., ASSIGNOR TO UNION TYPEWRITER-COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW YORK.

TYPE-WRITING- MACHINE;

Specification of Letters Patent.

Patented Dec. 3, 1907.

Applicatioafileil February 6.1906. Serial No. 299.805.

To all whom it may comer-m Be it known that I, HENRY A. SMEDBERG,

, I cit izcn of the United States, and resident of the borough of i\' [anhattan, city'of New York, in the county of New York and State of 'New York, have invented certain new and useful Improvements in TypeWr1t1ng Machines, of

palobject to provide a bell-crank-and-ful ClllllhlNLI construction wherein the friction of the contacting parts s reduced to a mimmum and the construction thus rendered more durable, as well as easier of action.

' In the accompanying drawings, Figure 1 is a vertical sectional elevation of a- Mon'arch style of type bar action embodying my in-' .vention, the view being taken substantially centrally and longitudinally of the machine.

i Fig. 2 is a like view of a modifiedconstruction.

Referring particularly to Fig. 1., the key lever is marked 2, and, as in the Monarch machine, is normally held u j against its ful crum plate 3 and against a rent pad 4 by a lifting spring 5', secured at its rear end to the fulcrum plate or some other fixed part of the machine, and connected at its forward, free end to a loop or strap 6 pivoted at 7 on the key lever. Therear end of the key lever is 'curved'to creep along the under side ofthe fulcrum plate. as the key is depressed, in

order to produce a chan e in fulcrum, but the.

key lever is prevented rom moving endwise by-afixe'd transverse rod 8 arranged with a slot 9 in the key lever; 10 is the type bar, in this case pivoted at 11in a hanger 12 attached by a screw 13 to the segment 14. The type end 15' of the type bar rests normally upon a pad 16. A coiled spring 17, attached at one end to the type bar and at its opposite end to the hanger or a washer 18 thereon,- serves to return the type'bar to normal position on the pad after the type has left its impression on the paper on the platen 1.9. Pivoted at 20 in the heel of the type bar is a link 21 which at its rear end is pivoted at 22 to the upper end of a vertically arranged sub-lever or hell crank 23. This bell crank is pivoted to the side of the key lever at 24, and the lower portion of the bell crank which projects down beyond the key lever is formed with a forwardly extending arm 25 to which is pivoted at 26 an anti-friction roller 27. This roller 28 and 29, the one facing the other, said bearing surfaces 28 and 29 are in substantially horizontal planes and parallel. this case they are formed on the inner sides of two plates or bars 30-31, which are preferably, though not'nec'essarily, connected to- The bars-30 31 and the'connecting portion 32 form in c'ross-secti on a U-shaped fulcrum bar gether by a vertical portion or web 32.

print, the pivot 24 of course descends with the key lever and the roller 27 rolls forward on the bearing 28, the roller at this time -movirig in a direction opposite to that of the upper end of the bell crank. When the key leveris released and restored by its s ring 5,, the-roller 27 will bear against and roll on the opposite face 29 and cause the bell crank to swing in a contrary direction. The distance between the bearing surfaces 28 and 29 is slightly reater than the diameter of the :roll 27, so t at the roll bears on only one surface at a time in the vibration of the bell crank. 4

Referring now to 'Fi 2, all of the parts shown are like those ilustrated in F1 1, with he exception of the lower end oi the bell crank and the fulcrum bar. In Fi 2-,

two opposite bearing surfaces, as in Fig. 1,

During the depression 27 cooperates with two flat bearing surfaces Both of 1 it will be noted that there-are two. a'nti-fricvent cramping action of the bell crank upon the fulcrum bar. When the key lever is depressed to swing the type bar'upwardly, the

roller 27 bears upon e surface29 of the fulcrum bar and causes the upper end of the bell crank to turn on its pivot 24 on the key lever in the direction of e arrow, the lower end of the'bell crank at this time moving forward slightly and the rolls 27 a and 27 riding on their bearings 29 and 28 respectively, When the key lever is released, its returning spring causes the lever to ascend and the roll 27? pressing and riding upon its bearing 28, causes the bell crank to be turned in the opposite direction and the type bar to be brought back to its normal position upon the pad 16.

In both forms of my invention the bell v crank is provided with an anti-friction roller and the fulcrum bar with a bearing surface upon which the roller bears and travels dur ing the, vibration of the bell crank. The bearing surfaces are formed or arranged transversely of the fulcrum bar and are. elongated or extended so that the roller or rollers may bear and travel on these surfaces during the back and forth movements of the bel ,crank. In both instances there is a roller bearing action when the key lever .is depressed and when it is permitted to return to normal position; thus all sliding bearings between the bell crank and the fulcrum bar areavoided. i Y

The fulcrum bar in each instance of my invention preferabl extends entirely across the system ofbel cranks and is secured at its endsin the side frames of the machine.

W'hatjI claim as new and desire to secure by Letters Patent, .is: a

1. In atypewritlng machine, the combinaa tion of a type -bar, a key-lever, a fixed fultion ofa t tl 1e bell crank, and 'a'fijredfulcrum bar 'pro- ;vided with transverse extended bearin' surfaces at o positesides of said roller an with.

tionofa t e pivoted to he I ma y,

crum bar having transverse extended hearing surfaces for rolling means to bear and travel on, and a bell crankpivoted to the key lever and carrying rolling means for cooperating with said bearing surfaces.

'1' 2. In a typewriting machine, the combination of a type bar, a key lever, a fixed fulcrum bar having transverse extended bearing surfaces for rolhng means to bear and trave I on, 'nd a bell crank pivoted to-the type bar and carryin tone-or more rollers to cooperj ate with sai bearing surfaces.

' In a typewriting machine, thecombinabar, a key lever, a .bell crank pivoted to t e key lever, a'roller pivoted on the' bell crank;.and a fixed fulcrum bar pro vided withtransverse extended bearing surfaces' betweenqwhieh said roller is received and with which it cooperates 4.3; Ina typewriting machine, the combinabar,-a key lever, a bell crank tion of a typle pivoted to t e'key lever, a roller pivoted on which sai rollercoo erates alternately during the operation oft eparts.

-' 5. Ina typewriti ng machine, the combinabar, a key lever, a bellcrank.

, key lever, a roller pivoted on the'bellcrank,'and a fixed-fulcrumbar U- It is hereby certified that the State of incorporation of the assignee in Letters Patent N 0. 872,543, granted December 3, 1907, upon the application of Henry A. Smedberg, of New York, N. Y., for an improvement in Type-Writing Machines, was

erroneously given as New York whereas said State should have been given as .ZVew Jersey, as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may eonform to the record of the ease in the Patent Ofliee.

Signed and sealed this 1st day of June, A. 1)., 1915.

[SEAL] J. T. NEWTON,

Acting Commissioner of Patents. 

